F(x)=x^2-9x+2 evaluate f(-2)
1 answer:
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The equation of the vertical line is
Explanation:
It is given that the vertical line passes through the points
For vertical line, the slope is undefined.
Hence,
Let us substitute the coordinate in the equation
, we have,
Simplifying, we have,
where and
Substituting the values of a, b and c in the equation , we have,
Thus, the equation of the vertical line is
Answer:
15.87% probability that no more than 80 customers walk into the coffee shop next Monday
Step-by-step explanation:
Problems of normally distributed samples can be solved using the z-score formula.
In a set with mean and standard deviation
, the zscore of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:
What is the probability that no more than 80 customers walk into the coffee shop next Monday?
This is the pvalue of Z when X = 80. So
has a pvalue of 0.1587.
So there is a 15.87% probability that no more than 80 customers walk into the coffee shop next Monday